My husband passed away 5 months ago, I have a 4-year old girl child. When I was claiming death benef

My husband passed away 5 months ago, I have a 4-year old girl child. When I was claiming death benefits from his office, my mother-in-law has also sent a claim to the office saying that she is a legal heir. My husband has nominated his mother for life time benefits before our marriage and it remained unchanged. Gratuity he made me as a nominee after marriage and the rest of them he missed to change. 1. Nomination before marriage will still be considered? I have a small kid and I wanted to know. 2. As a result of two nominations, my husband's employer has asked me and my mother-in-law to get a Succession Certificate or any valid affidavit on how much percentage of benefits to be given to me and my mother-in-law. Office benefits are Provident Fund(no nominee on EPFO Portal), Gratuity (I am the nominee), Group Term Insurance from Employer, EDLI from PF Department (no nominee). Can you please help me on how much percentage must be given to my mother-in-law in all these benefits?